Without knowing your technical expertise or level of skill, Paul's suggestion is best. White's has a great service department and they're fast. Reasonable, too, regarding cost.
One thing you might check visually first is for bulging electrolytic capacitors. Because we often store our detector in a garage or other very hot space, they can self destruct from the heat. Electrolytic capacitors are made from aluminum foil rolled tightly and separated by a wax and plastic dielectric which can melt and deform from high temperatures. It's the most common failure in capacitors.
Examine your machine's electronic printed circuit boards for failures like in the attached image. Capacitor labeled "1" is normal. Notice its nice, smooth top. Capacitors "2," "3," and "4" are all bad having bulging tops. Sometimes the capacitor will deform at the side instead so look for barrel shaped capacitors which should have nice smooth, straight vertical sides. Capacitor number "2" has a very slight bulge in the side as well as the top. This ONLY applies to electrolytic capacitors.
This photo is from a switch-mode computer power supply which always runs hot. The heat accelerated the failure of the capacitors.
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« Last Edit: September 28, 2010, 03:16:50 pm by GoldDigger1950 »
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It's all about that moment when metal that hasn't seen the light of day for generations frees itself from the soil and presents itself to me.
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